EMotorWerks JuiceBox Troubleshooting Q&A

 

     This guide is meant to assist in any technical issues you may encounter at any point during your JuiceBox installation and initial usage experience. Contents are organized chronologically. Please see if your issue can be resolved here before contacting us, where we'll be glad to help.

 

Contents/Scenarios:

1. Receiving your JuiceBox

2. Installing your JuiceBox

3. Charging with your JuiceBox

4. Scheduling your JuiceBox charge

5. Associating your JuiceBox (WiFi)

6. Monitoring your JuiceBox (WiFi)

7. Managing your JuiceBox data (WiFi)

 

Receiving your JuiceBox:

  • Q: I've ordered a Pro JuiceBox - where is the antenna for it?
  • A: Being a plastic component, the antenna is not as sturdy as the solid metal body of the JuiceBox. For transport, it should be detached. Find it wrapped up near the top of your parcel, and thread it on to the brass fitting. 
  • Q: I've ordered a Pro Plus JuiceBox - where is the FOB remote for controlling it, and the antenna that attaches to it? 
  • A: The FOB remote should be taped to the enclosure body of the JuiceBox. It is brown in color, with an extendable antenna. The main antenna for the JuiceBox will be wrapped separately. 

Installing your JuiceBox:

  • Q: What amperage rating should my electrical breaker be? 
  • A: By American standard electrical code, your breaker should be rated for 120% of your maximum continuous load. So, that would mean at least 36A for a JuiceBox 30 installation, or at least 48A for a JuiceBox 40 installation. Please note that all JuiceBox units can be set to any current draw limit; thus accomodating any pre-existing supply circuitry. 
  • Q: What amperage rating should my wiring be? 
  • A: Your wiring should be rated to your maximum continuous amperage. So, AWG 10 for 30A maximum, AWG 8 for 40A maximum, AWG 6 for 55A maximum, etc. Unusually long run length will demand larger wiring. Please refer to this table: {source}
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  • Q: What kind of receptacle should I have to plug in my JuiceBox?
  • A: The JuiceBox plugs in via NEMA 14-50. So, you should have a NEMA 14-50 receptacle installed. If you are installing outdoors, please be sure to use an outdoor rated receptacle. Like this one: {source}
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  • Q: How do I mount my JuiceBox Classic or Pro?
  • A: A brushed aluminum mounting bracket will be included with your JuiceBox (if ordered as a package). Simply use the supplied wood screws to screw it to your wall surface. Once the bracket is mounted, you can slide the JuiceBox in and out easily; allowing you to use it portably and as a station. You can find mounting brackets here if needed: {source}
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    <a href="http://www.emotorwerks.com/products/online-store/product/show/128-mounting-bracket-for-base-juicebox-only/related_product-171">Mounting Bracket</a>

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  • Q: How do I mount my JuiceBox Pro Plus?
  • A: There are two holes in the JucieBox Pro Plus body - one on the very top, and one on a metal tab at the bottom. Use a wood screw to fasten the unit to your wall through these holes. If you encounter some difficulties on the bottom tab, use a smaller screw head. 
  • Q: How do I deal with my J1772 charge cable and my J1772 plug when not in use?
  • A: A cast ABS plug holder and cable manager will be included with your JucieBox (if ordered as a package). Simply use the supplied screws (or your own) to fasten it to your wall surface. Plug your connector in when not charging, and drape your cable around the top like a hose reel. You can find holders here if needed: {source}
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    <a href="http://www.emotorwerks.com/products/online-store/product/show/170-j1772-plug-holder-angled-entry-and-cable-management/related_product-171">J1772 Holder & Cable Manager</a>

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  • Q: Would any electrican know how to install my JuiceBox?
  • A: Yes. To avoid complications and deliberation, simply request a NEMA 14-50R outlet installation with however many amps of continuous service you want (based on your vehicle charging needs). Make sure you request for the outlet to be installed within a few feet of where you want your JuiceBox stationed. If you are located in the Bay Area, CA, and are looking for a good deal on a qualified + experienced electrician, we offer services: {source}
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    <a href="http://emotorwerks.com/products/online-store/product/show/135-installation-in-sf-bay-area/related_product-181">Installation in SF Bay Area</a>

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Charging with your JuiceBox:

 

  • Q: I've plugged my JuiceBox into my 14-50 receptacle, but it is not clicking on and off?
  • A: Please ensure power is on and available at your NEMA 14-50R plug. Your electrical breaker may be tripped or otherwise deactivated. Check that there is no damage to your input cable going from your JuiceBox to your plug, and ensure all wiring in your supply circuit is intact.
  • Q: I have plugged my JuiceBox into my vehicle, but it is not beginning charge.
  • A: Please make sure your JuiceBox is plugged into your supply circuit and is receiving power. Before you plug the JuiceBox into your vehicle to charge, ensure that it is clicked on and off. Beyond this, there are several things you should first check before contacting support:
    • Check the button pressing action on your J1772 plug handle. As you're depressing your J1772 handle button, make note of at what point in the press you hear a small click from the internal momentary switch. It should be approximately half-way through the action of pushing the button. If it is not, the J1772 handle has incurred damage, and you can fix it by referring to this doc (please make sure your JuiceBox is unplugged before attempting this!): https://docs.google.com/document/d/1hgDBIq73k3XK9dWhqSvlyM2YD9aM2uaMyjgfx_iZIYw/edit?usp=sharing
    • Make sure there are no schedules set on your EV. Or, if there are, they are out of range of your current charge session. 
    • Make sure there are no charge schedules requiring override on your companion app or on the JuiceBox display. 
    • Check your EV charge port for physical damage or evidence of electrical damage. 
  • Q: My Juicebox begins charging my EV, but charge is disrupted by clicking on and/or off? (Your JuiceBox may display "GFI tripped" during these interrupt events)
  • A: As previously stated, your JuiceBox is cycling on and off in response to Ground Fault Interrupt instances. This could be due to a legitamite reason, such as water in your charge cable or EV charge port, an incision or fray in your wiring (from J1772 charge cable to supply side wiring), or an obstacle in way of your charge plug. This could also be occuring because of mis-calibration in your JuiceBox unit. There are several preliminary things you can try here:
    • If this is a newly occuring issue, it stands to reason that it is the result of some kind of environmental damage. Check your entire charge circuit (from EV to breaker box). It may be that the charge cable has been twisted out of place by repeated movement. Try twisting the charge cable as it enters the JuiceBox unit. Also check the cable handle for particularities in the top button, as described above. 
    • If this issue has occured since you installed the unit, check your installation. It may be worth having an electrican check the wiring all the way back to the breaker box. Also try the items suggested above. 
  • Q: I would like to change the current limit of my JuiceBox. How can I do this?
  • A: Simply turn trimpot R20 (counterclockwise for increased limit) on Classic units - be sure to power off before doing this! For Pro and Pro Plus units, you can use the app or webpage to set the current limit. For Pro Plus units, you can also use the included FOB remote and the LCD screen. 

Scheduling your JuiceBox charge:

  • Q: How do I set a charge schedule on a Classic JuiceBox?
  • A: Apologies, this is not a feature of the Classic JuiceBox. Most EVs have the ability to set basic charge schedules from the vehicle, or you can request an upgrade to WiFi from EMotorWerks. 
  • Q: How do I set a charge schedule via WiFi on my JuiceBox Pro or Pro Plus?
  • A: Once your JuiceBox is associated with your WiFi network, and you have added the JuiceBox to your app, simply navigate to the "Schedule" feature in your app menu. You can set a start and end time for weekdays, and a seperate one for weekends. The same goes for using the website to do this. \
  • Q: How do I set a charge schedule via my LCD screen on my Pro Plus/Premium? 
  • A: Simply navigate to the menu, select "Set a Schedule", and enter your weekday/weekend start and end times.
  • Q: I have set a charge schedule on my JuiceBox, but the unit is not obeying my set schedule?
  • A: Please ensure that your vehicle does not have a charge schedule in place. Also, check that your selected timezone is correct. If you have a Pro Plus/Premium JuiceBox, make sure you do not have schedules set on both the JuiceBox unit itself, and your WiFi control app.

Associating your JuiceBox (WiFi):

  • Q: My JuiceBox is not broadcasting a network for me to connect to?
  • A: Firstly, ensure that your plastic antenna is threaded onto your brass WiFi receiver (on the unit bottom, by the cable glands, for Pro units. On the very top for Pro Plus units). Check that your JuiceBox is plugged in, and has not been for longer than 2 minutes. The JuiceBox will only broadcast a local network for 2 minutes following power-up. 
  • Q: My network is not appearing once I've logged into my JuiceBox local network and navigated to "setup.com"? 
  • A: Make sure you are within range of your WiFi network. Even if your computer or mobile device detect the network, still try moving closer to the AP. Try cycling your network. Try powering off the JuiceBox and connecting to its' local network, going to setup.com, and searching for networks again.
  • Q: I have entered my WiFi network password, the loading bar/prompt has finished, and it is giving me a message along the lines of "cannot connect to network"?
  • A: Interestingly, this means you have successuly connected to your WiFi network, and thus the JuiceBox is no longer broadcasting its' local network. 
  • Q: My JuiceBox has associated with my network, but I cannot find it in my "nearby JuiceBox" list on my app?
  • A: Ensure your JuiceBox is still powered up, and has successfully associated with your network. Try re-freshing the application/web page. See below.
  • Q: I still cannot find my JuiceBox on my "nearby JuiceBox list", and I would like to add it to my app and/or web account with the JuiceBox ID?
  • A: For Pro units, your ID will be either printed on your QuickStart sheet (third page), or be placed on a label near the bottom of your unit enclosure. If this is not the case, you will need to use an FTDI serial cable to connect the JuiceBox to your PC, open a serial port, and view the output. The ID is a long string of numbers. For a Pro Plus unit, you can view the ID by navigating to the menu with your control FOB, and selecting "display ID". 

Monitoring your JuiceBox (WiFi)

  • Q: My JuiceBox is charging my car, but I do not see any usage charts being formed on my web portal?
  • A: Ensure your JuiceBox is properly associated with your network.
  • Q: How do I see visualizations and charge charts for my unit?
  • A: Navigate to the web control room, sign in (or sign up if you have not already), and navigate to "Show all JuiceBoxes". From there, click on "Real-time data" under your JuiceBox ID. 
  • Q: How do I read these charts?
  • A: There is a guide for reading these charts directly below the charts.
  • Q: What is a "Session"? 
  • A: This is a charging session - so the charge starting when you first plug into your vehicle, to either full or unplug. 

Managing your JuiceBox data (WiFi)

  • Q: How can I tell how much energy I've consumed in charging with my JuiceBox?
  • A: You can see total lifetime energy use on the Control Room site, both in the all JuiceBox units summary, or in the 'Real-time data' link. On Pro Plus/Premium units, you can see lifetime energy on the top of the LCD screen. 
  • Q: How can I tell my energy usage in any particular charge, or any particular date?
  • A: If you go to 'Real-time data', and scroll down the page, you can see a 'Sessions' log table. Your sessions and total energy delivered are displayed here.
  • Q: How can I access and manipulate my data independently?
  • A: We will make available a developers' API shortly. 
  • Q: How can I access logged data?
  • A: We will make available an historic data analyis tool shortly.

 

If the above does not help with your issue, please contact us for support at: This email address is being protected from spambots. You need JavaScript enabled to view it.

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eMotorWerks Inc. is a California based company which focuses on promoting high performance electric vehicle charging technologies, such as EV charging stations (EVSE), smart grid EV charging networks, and charging systems for high-voltage and DC fast charging.